Base for a standing umbrella



FIG. 1 is a perspective view of the base for an umbrella according to my invention;

FIG. 2 is a top view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a bottom view thereof. 

The ornamental design for a base for a standing umbrella, as shown and described. 